Differential for motor vehicles



2 snglifrswgmemV 1 PoR Moron VsmcLes; 16. 1922 F| LED JAN,

Jan. 2, 1923. 1,440,555

J RGS@ A DIFFERENUAL PoR MQToR VEHICLES.

FILED JAN. 16 1922, 2 SHEETS-SHEET 2 ffl///////////////# /ln Jantes nose, or marcare, iraniana, assronon "ro AnvaNcn-RUMELY ooiaranr, or

LAPOBTE, NDANA, A

oonron'afrroi'v or rumana.

nrirnnnnrmn ron ivroronvnrircnns.

Application fiiedaanuafy 1e, 1922. serial No. 529,587.

To all whom t may concern:

Be it known that l, .larme Boss, a citizen oit the United States, residing at' Laporte, in the county of Laporte` and State of Indiana, have invented a certain new and useful Improvement in Diderentials for Motor Vehicles, of which the following is a specification.

The inventionl of this application, which is a division or my application Ser. No. 450,814, tiled March 9, 192i, relates to improvements in differentials for motor vehicles. particularly for traction engines and similar heavy self-propelled machinery. lt has for one object to provide a new and improved torm which can be easily and conveniently assembled, rigid in operation, and cheap in cost oi: construction and repair. Other objects will appear 'from time to time throughout the specification and claims.

My invention is illustrated more or less diagrammatically in the accompanying drawings, wherein- Figure 1 is a plan view with part-s broken away; f

Figure 2 is a vertical section showing in part ythe diiierential assembly;

Figure 3 is a diagrammatic plan view of the transmission.

Like parts are ters throughout. y

A is atransmission housing in which a differential shaft A is mounted for rotation in suitable bearings, not here shown designated by lilze characsince they form no part of thepresent invention.

on the stub end aXle shafts B B', the inner ends of these shafts being supported on the bearing B2 as indicated. The outboardends rotatably mounted in bearings B3 carry the traction wheels B4. B5 B5 are driving pinions rotatably mounted on the differential` `integrally or apertures D3 .within the aperture D3,

B' B are master gears rotatably mountedy gearand each the pinions C3 .These miter gears are integral with the driving gears B5.

This'arrangementmakes, up the` usual type of dilerentia-lin which as .long as resistance to rotation of the two master gears is the same, the pressure exerted by ythe miter Y gears on opposed sides ,of the; nii-ter pinions balances and so when the differenof them in all ot" tial gear is rotated, the two miter gears,the

driving pinions and the master-gears all rotate in unison at the samespeed but when 1 pressure on one side becomes greater than on the other, then the differential actionr takes place owing tothe unbalance of the pressurey on opposed sides of` the miter pinions. lts action is well known in the art and on this we need no Jfurther discussion. f

The differential gear or planetary carrier comprises preferably a fiat plate D projecting outwardly from a hub D land bounded by the rim D2. This plate may be' cast This box is free tarot-ate and in effect floats oit .the

porting box D4.

therein. `Itsl movement in the plane plate is limited by its contact with the interior walls of the aperture D3, and its movement. at right angles to the plane 'of the gear plate miter gears C5 C5. Thus whenthe parts of the differential are assembled as shown the supporting boxes are held in position so that there is no excessive movement in the plane parallel to that'of the plate and they are also held 'from movement at right angles to that oit the plate so that they cannot tall out o' the plate, but are held in operative position by means of the mter gears.` rotate, and while this rotation will ordinarily be slight, it is sufficientv to enable the parts to be self-aligning.

l claim:

l. In a differential gear a plurality or w separate pinion boxes, pinions mounted for rotation therein, 'and means Jfor locking each of said boxes for rotation within said gear.

2. ln a diierential gear a plurality of separate pinion boxes, pinions mounted for is limited by contact with thev In this position, however, they can' the gear may be built upon it. The plate has a plurality of perforations ory in each of which is set the suprotation therein, a plurality of perforations in said gears adapted to receive said boxes, said boxes mounted for rotationwithin said perforations. i

3. In a dii'erential gear a plurality of lseparate pinion boxes, pinions mounted for rotation therein, a plurality of perforations in said gears adapted toz receive `said boxes,

said boxes adapted to rotate independently,l

each `about an axis parallel to the axis of rotation of said gear. A i

4. In a differential gear a main gear haV- v ing a plurality of perforations therethrough,

a plurality of separate pinion boxes, pinions l mounted for rotation" therein `said pinion boxesl adapted tol be mounted inthe perforations in'said gear andadapted to jrotate independently therein, and a pair of' gears one on either side of said main differentialgear adapted toinesh With'said pinrotate independently therein each about an axis parallel to the axis of rotation of said inain gear,v and a pair 'of gears one on either side of said main differential gear adapted to mesh With' saidpinions and .to hold said pinions'and pinion boxes in position kWithin `said inain gear.

Signed'at Laporte, county of Laporte, y

y o'Janu-`y and state of Indiana, this 1l d ary,r1p922. Y

pinions and pinion 'l mounted in the perforations in said gear and adapted tor 

